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9) a. Explain what is happening inside an atom when it emits light. 9) b. Explain...

9) a. Explain what is happening inside an atom when it emits light.

9) b. Explain what is happening inside an atom when it absorbs light.

10) An excited hydrogen atom emits light with a frequency of 1.141 x 1014 Hz for its electron to reach the n=4 energy level. In which energy level did the electron begin? Big hint: what is the sign (neg or pos) of the electron’s energy change? (Remember, it says “emits”) Use this sign when you input the electron’s delta E into the equation.

11) Calculate the wavelength of the light emitted when an electron in the hydrogen atom undergoes a transition from the n = 5 to the n = 3 level. What part of the spectrum is this light in?

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